Name

pthread_attr_create − Creates a thread attributes object that is used to specify the attributes of threads when they are created. 

Syntax

#include <pthread.h>

int pthread_attr_create (attr)
pthread_attr_t *attr;

Arguments

attr Thread attributes object created. 

Description

This routine creates a thread attributes object that is used to specify the attributes of threads when they are created. The attributes object created by this routine is only used in calls to pthread_create. 

The individual attributes (internal fields) of the attributes object are set to default values. (The default values of each attribute are discussed in the descriptions of the following routines.) Use the following routines to change the individual attributes:

pthread_attr_setinheritsched

pthread_attr_setprio

pthread_attr_setsched

pthread_attr_setstacksize

When an attributes object is used to create a thread, the values of the individual attributes determine the characteristics of the new object. Attributes objects perform similar to additional arguments to object creation. Changing individual attributes does not affect any objects that were previously created using the attributes object. 

Return Values

If an error condition occurs, this routine returns -1 and sets errno to the corresponding error value.  Possible return values are as follows.